Liquefied natural gas (LNG) pipeline pressure test plugging device

Abstract

The utility model discloses a liquefied natural gas (LNG) pipeline pressure test plugging device in the technical field of pipeline devices, which comprises a base, a mounting groove is formed in the middle of the top of the base, a protective shell is arranged in the middle of the top of the mounting groove, and first connecting pipes are connected to the middles of the two ends, far away from each other, of the protective shell in a penetrating manner; first pressure testing devices are fixedly connected to the middles of the two ends, close to each other, of the first connecting pipes, and second pressure testing devices are arranged between the two ends, away from each other, of the first pressure testing devices. The liquefied natural gas pipeline pressure test plugging device has the advantages of being high in structural stability, good in protectiveness, high in sealing performance and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline devices, in particular to a liquefied natural gas (LNG) pipeline pressure testing and plugging device. Background Art

[0002] In the existing technology, most liquefied natural gas pipeline pressure testing and sealing devices have a series of problems such as weak structural stability, loose connections between internal component structures, unstable internal pressure in the pipeline, and weak structural sealing, which can cause gas leakage and damage to the components themselves, making it impossible for liquefied natural gas to be transported and mobilized normally, and polluting and damaging the surrounding environment. Utility Model Content

[0003] The purpose of the utility model is to provide a liquefied natural gas (LNG) pipeline pressure test and plugging device to solve the problems of most of the liquefied natural gas pipeline pressure test and plugging devices mentioned above, such as weak structural stability, loose connectivity between internal component structures, unstable internal pressure of the pipeline, weak structural sealing, gas leakage causing damage to its own components, inability to complete normal transportation and mobilization of liquefied natural gas, and pollution and damage to the surrounding environment.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solution: it includes a base, a mounting groove is opened in the middle of the top of the base, a protective shell is arranged in the middle of the top of the mounting groove, a first connecting pipe is penetrated and connected in the middle of the two ends of the protective shell away from each other, a plurality of first connecting tubes are fixedly connected in the middle of the two ends close to each other with a first pressure test device, and a second pressure test device is arranged in the middle of the two ends of the first pressure test device away from each other. The structure is simple and the operation is convenient.

[0005] As a further solution of the utility model: first mounting screw holes are penetrated on both sides of the top of the base away from each other, and the middle of the tops of multiple first mounting screw holes are threadedly connected with first mounting bolts. By installing multiple mounting bolts, the base can be fixedly connected conveniently, and the threaded connection is more stable.

[0006] As a further solution of the utility model: first connecting holes are opened in the middle of the protective shell away from both ends and matching with the multiple first connecting pipes, and pipe openings are opened in the middle of the multiple first connecting pipes away from both ends, which are used to provide a channel for transporting liquefied natural gas and at the same time provide appropriate position support for the structural connection of the plugging device.

[0007] As a further solution of the utility model: multiple fixing rings are provided on the outer walls of the multiple first connecting tubes away from the two ends, multiple fixing holes are evenly penetrated around the multiple fixing rings away from the two ends, and fixing bolts are penetrated and connected in the middle of the multiple fixing holes away from the two ends. The installation of the multiple fixing rings has the function of fixing the connection of the outer walls of the first connecting tubes, providing a certain protection for the adjacent two ends.

[0008] As a further solution of the utility model: a plurality of first connecting holes are evenly opened around the two ends of the first pressure testing device that are far away from each other, and the inner walls of the plurality of first connecting holes are all provided with first connecting tubes, which is beneficial to the regulation of air pressure and has a partial connecting effect.

[0009] As a further solution of the utility model: auxiliary screw holes are provided around the two ends of the plurality of second pressure test devices away from each other, providing an additional device for the structure to facilitate effective connection to the exhaust device.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. In the utility model, by installing multiple mounting screw holes and multiple mounting bolts, the external device fixation of the base has a strong stabilizing effect, effectively avoiding the strong impact force on the related components of the device itself caused by unstable air pressure, thereby causing damage, and obtaining a certain cost loss for the maintenance of the device and the replacement of internal components. The installation of multiple first connecting pipes is used to provide a channel for transporting liquefied natural gas. At the same time, it provides appropriate position support for the structural connection of the plugging device. The installation of multiple auxiliary screw holes provides an additional device for the structure, which is convenient for making an effective connection to its exhaust device. While the external components are stably connected, the internal structure is reasonably optimized, which is a simpler, more convenient and effective supplement for the regulation of air pressure, and is convenient for making timely remedial and discharge measures.

[0012] 2. In the utility model, by installing the second pressure test device as an important component for transit connection, the air pressure discharged from the multiple first connection pipes will be quickly and effectively discharged into the inner cavity of the protective shell through the multiple air outlet components threadedly connected by the multiple auxiliary screw holes of the second pressure test device, forming a stable protective layer for it. By installing a fixing ring device, it is beneficial to fully and stably connect the multiple first connecting pipes, and it also plays a certain preventive role in the external protection of the pipeline. The multiple first mounting bolts have a strong stabilizing effect on the base, which fully enables the sealing device to run smoothly, with a simple structure and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the structural front view of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the first pressure testing device in the utility model;

[0015] Figure 3 For the utility model Figure 1 A is a magnified schematic diagram of the structure;

[0016] Figure 4 For the utility model Figure 2 A schematic diagram of the structure of B in the middle;

[0017] Figure 5 For the utility model Figure 2 Schematic diagram of the enlarged structure of C in the middle.

[0018] In the figure: 1. base; 101. first mounting screw hole; 102. first mounting bolt; 2. mounting groove; 3. protective shell; 301. first connecting hole; 4. first connecting pipe; 401. pipe mouth; 402. fixing ring; 403. fixing hole; 404. fixing bolt; 5. first pressure test device; 501. first connecting hole; 502. first connecting pipe; 6. second pressure test device; 601. auxiliary screw hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figures 1 to 5 In the embodiment of the utility model, it includes a base 1, a mounting groove 2 is opened in the middle of the top of the base 1, a protective shell 3 is arranged in the middle of the top of the mounting groove 2, and the protective shell 3 is penetrated and connected with the first connecting pipe 4 in the middle of the two ends away from each other, and the middle of the multiple first connecting pipes 4 close to the two ends are fixedly connected with the first pressure test device 5, and the first pressure test device 5 is arranged in the middle of the two ends away from each other. The second pressure test device 6 has a simple structure and convenient operation.

[0021] Among them, first mounting screw holes 101 are penetrated on both sides of the top of the base 1 that are far away from each other, and the middle of the tops of multiple first mounting screw holes 101 are threadedly connected with first mounting bolts 102. By installing multiple mounting bolts, it is convenient to fix the base 1, and the threaded connection is more stable.

[0022] First connecting holes 301 are provided in the middle of the protective shell 3 away from both ends, which are matched with the multiple first connecting pipes 4. Pipe openings 401 are provided in the middle of the multiple first connecting pipes 4 away from both ends, which are used to provide a channel for transporting liquefied natural gas and provide appropriate position support for the structural connection of the plugging device.

[0023] Multiple fixing rings 402 are provided on the outer walls of the multiple first connecting tubes 4 at both ends away from each other, and multiple fixing holes 403 are evenly penetrated around the multiple fixing rings 402 at both ends away from each other, and fixing bolts 404 are penetrated and connected in the middle of the multiple fixing holes 403 at both ends away from each other. The installation of the multiple fixing rings 402 has the function of fixing and connecting the outer walls of the first connecting tubes 4, providing a certain protection effect for the adjacent two ends.

[0024] A plurality of first connection holes 501 are evenly arranged around the two ends of the first pressure test device 5 which are far away from each other. The inner walls of the plurality of first connection holes 501 are all provided with first connection tubes 502, which is beneficial to the regulation of air pressure and has a partial connection effect.

[0025] The second pressure testing devices 6 are provided with auxiliary screw holes 601 around the two ends away from each other, providing an additional device for the structure to facilitate effective connection to the exhaust device.

[0026] The working principle of the utility model is: in the liquefied natural gas pipeline pressure test and plugging device, the first pressure test device 5 has multiple first connecting holes 501 around the two ends away from each other to properly adjust the air pressure in the inner cavity of the first connecting pipe 4 through multiple first connecting pipes 502 connected through its inner wall, and specifically, the multiple auxiliary screw holes 601 opened around the two ends away from each other by the second pressure test device 6 are used for conveying and discharging the multiple first connecting pipes 502 through the connection of the exhaust assembly, and the stable air pressure formed by the inner strength of the protective shell 3 is effectively isolated from the gas, wherein the multiple first mounting bolts 102 have a strong stabilizing effect on the base 1, which fully enables the plugging device to run smoothly, with a simple structure and convenient operation.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A liquefied natural gas (LNG) pipeline pressure test plugging device, comprising a base (1), characterized in that: A mounting groove (2) is provided in the middle of the top of the base (1), a protective shell (3) is provided in the middle of the top of the mounting groove (2), a first connecting pipe (4) is penetrated and connected in the middle of the two ends of the protective shell (3) away from each other, a plurality of first connecting pipes (4) are fixedly connected in the middle of the two ends close to each other, and a second pressure testing device (6) is provided in the middle of the two ends of the first pressure testing device (5) away from each other.

2. A liquefied natural gas (LNG) pipeline pressure test plugging device according to claim 1, characterized in that: First mounting screw holes (101) are provided through two sides of the top of the base (1) that are away from each other, and first mounting bolts (102) are threadedly connected in the middle of the tops of the plurality of first mounting screw holes (101).

3. A liquefied natural gas (LNG) pipeline pressure testing and plugging device according to claim 1, characterized in that: The protective shell (3) is provided with first connection holes (301) at positions matching the plurality of first connection tubes (4) in the middle away from both ends, and the plurality of first connection tubes (4) are provided with tube openings (401) in the middle away from both ends.

4. A liquefied natural gas (LNG) pipeline pressure test plugging device according to claim 1, characterized in that: Multiple fixing rings (402) are arranged on the outer walls of the multiple first connecting tubes (4) at two ends away from each other, multiple fixing holes (403) are evenly penetrated around the multiple fixing rings (402) at two ends away from each other, and fixing bolts (404) are penetrated and connected in the middle of the multiple fixing holes (403) at two ends away from each other.

5. A liquefied natural gas (LNG) pipeline pressure testing and plugging device according to claim 1, characterized in that: A plurality of first connection holes (501) are evenly arranged around two ends of the first pressure test device (5) that are far away from each other, and the inner walls of the plurality of first connection holes (501) are all provided with first connection tubes (502).

6. A liquefied natural gas (LNG) pipeline pressure testing and plugging device according to claim 1, characterized in that: The plurality of second pressure testing devices (6) are provided with auxiliary screw holes (601) on the four sides away from the two ends.

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